Adam Fisko wrote: And as with ALL poisons, dosage is a critical consideration. Arsenic in small quantities used to be used to make rosy cheeks for women back in the 1800s How about cyanide -- we add small amounts of cyanide to many foods to improve their flavor (think almond extract). But you'd explode from overeating before you had consumed enough cyanide to do yourself in. Fortunately it is metabolized or eliminated; it does not build in the body over time. David E